Re: NEW member Suitable conversions?

> From: "Fred Smith" <imserv@...>
> > > From: "Matt Shaver" <mshaver@...>
> > > Some controls (this includes the EMC) have "work coordinate systems" or
> > > "fixture offsets" that can be independently adjusted and called up as
> > > required in your program.
>
> You should not need work offset for a lathe. Just use the tool offsets,
> with x & z distances from say tool number 1. When you next run the same
> job, put the tools anywhere you want, and just compare their locations to

T1

> to set the offsets. This will work if EMC keeps track of X & Z offsets.
> Most lathe controllers can, and this makes set up a lot easier.

Yep, you're right about this! I've never run a cnc lathe before, but I think
we/re going to have a problem here with the X offset. Since the EMC has
mainly been used on mills it has a tool length (Z) and diameter (X & Y) type
tool table. I guess we could fudge the X offset by entering it as a tool
radius and turning on compensation, but this seems awkward. This is one (of
several) reasons I'm eager to build an EMC controlled lathe so that these
issues can get sorted out. My "fixture offset" idea was the best workaround I
could come up with. Another issue the programmer of this specific lathe will
have to deal with is not running into the unused tools still mounted on the
carriage. Tim Goldstein, if you're reading this, how do you deal with the X
offset issue when you run in lathe mode, or do you only run single tool
programs?

Matt